岩石中铁的K_2Cr_2O_7快速准确测定法的商榷——兼对《分析化学》中氧化还原滴定法有关内容的商榷

HIGH-SPEED AND ACCURATE DETERMINATION OF IRON IN ROCK BY K_2Cr_2O_7 METHOD AND DISCUSSION ON SOME CONTENTS ABOUT OXIDA-TION-REDUCTION TITRATION IN“ANALYTICAL CHEMISTY”

本文提出了一种对岩石中铁的快速准确渊定方法,采用适当的分解试样和处理条件,以相应浓度的 K_2Cr_2O_7溶液进行滴定,可使不溶于酸的硅酸盐岩石中的测定从称取试样到得出分析数据在2小时内完成,并得到准确的分析结果。文中并对诱导氧化等问题提出了见解。

The paper puts forward a high—speed and accurate determination of iron in rocks.With proper decomposed samples and treatment condition,similar K_2Cr_2O_7 liquid in condensation was done by titration,and iron silicate rock in undissolving acid was determined.The processing was within two hours from samples taking to the end,with satisfactory result and relative ac- curate analysis data.It also gives opinions on the questions of induced oxidation.